CVE-2020-18494
CVSS v3
8.8
HIGH
EPSS Score
1.0 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Buffer Overflow vulnerability in function H5S_close in H5S.c in HDF5 1.10.4 allows remote attackers to run arbitrary code via creation of crafted file.
Technical details
- Published
- 2023-08-22
Frequently asked questions
What is CVE-2020-18494?
Buffer Overflow vulnerability in function H5S_close in H5S.c in HDF5 1.10.4 allows remote attackers to run arbitrary code via creation of crafted file.
Is CVE-2020-18494 actively exploited?
Active exploitation of CVE-2020-18494 has not been confirmed. Its EPSS score was 1.0% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-18494?
CVE-2020-18494 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2020-18494 affecting your environment?
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